1 /* 2 * AHCI SATA platform driver 3 * 4 * Copyright 2004-2005 Red Hat, Inc. 5 * Jeff Garzik <jgarzik@pobox.com> 6 * Copyright 2010 MontaVista Software, LLC. 7 * Anton Vorontsov <avorontsov@ru.mvista.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2, or (at your option) 12 * any later version. 13 */ 14 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/pm.h> 18 #include <linux/device.h> 19 #include <linux/of_device.h> 20 #include <linux/platform_device.h> 21 #include <linux/libata.h> 22 #include <linux/ahci_platform.h> 23 #include "ahci.h" 24 25 static const struct ata_port_info ahci_port_info = { 26 .flags = AHCI_FLAG_COMMON, 27 .pio_mask = ATA_PIO4, 28 .udma_mask = ATA_UDMA6, 29 .port_ops = &ahci_platform_ops, 30 }; 31 32 static int ahci_probe(struct platform_device *pdev) 33 { 34 struct device *dev = &pdev->dev; 35 struct ahci_host_priv *hpriv; 36 int rc; 37 38 hpriv = ahci_platform_get_resources(pdev); 39 if (IS_ERR(hpriv)) 40 return PTR_ERR(hpriv); 41 42 rc = ahci_platform_enable_resources(hpriv); 43 if (rc) 44 return rc; 45 46 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 47 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 48 49 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info); 50 if (rc) 51 goto disable_resources; 52 53 return 0; 54 disable_resources: 55 ahci_platform_disable_resources(hpriv); 56 return rc; 57 } 58 59 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 60 ahci_platform_resume); 61 62 static const struct of_device_id ahci_of_match[] = { 63 { .compatible = "generic-ahci", }, 64 /* Keep the following compatibles for device tree compatibility */ 65 { .compatible = "snps,spear-ahci", }, 66 { .compatible = "snps,exynos5440-ahci", }, 67 { .compatible = "ibm,476gtr-ahci", }, 68 { .compatible = "snps,dwc-ahci", }, 69 { .compatible = "hisilicon,hisi-ahci", }, 70 {}, 71 }; 72 MODULE_DEVICE_TABLE(of, ahci_of_match); 73 74 static struct platform_driver ahci_driver = { 75 .probe = ahci_probe, 76 .remove = ata_platform_remove_one, 77 .driver = { 78 .name = "ahci", 79 .owner = THIS_MODULE, 80 .of_match_table = ahci_of_match, 81 .pm = &ahci_pm_ops, 82 }, 83 }; 84 module_platform_driver(ahci_driver); 85 86 MODULE_DESCRIPTION("AHCI SATA platform driver"); 87 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); 88 MODULE_LICENSE("GPL"); 89 MODULE_ALIAS("platform:ahci"); 90